Re: More 10.1 backward compatibility

FROM : Drew McCormack
DATE : Mon Dec 16 20:33:34 2002

On Monday, December 16, 2002, at 08:06 PM, Philip George wrote:

> What happens when you compile on 10.1?
Good question. I wish I had a spare computer with 10.1 installed to try
it ;-) Actually I can use a friend's computer, so I will do that
tomorrow if I can. Still, it would be a shame to have to do all my
development on 10.1 for this reason.

Drew

>
> - Philip
>
>
>
> On Monday, December 16, 2002, at 08:40  PM, Drew McCormack wrote:
>
>> As much as everyone is probably sick to death of this topic, I still
>> haven't found a satisfactory answer in the archives, so I will ask
>> anyway.
>>
>> My program, compiled on 10.2 with gcc3.1, crashes without any warning
>> on 10.1, and leaves nothing behind in terms of logs etc. I think I
>> know which section of code is at fault: I recently made changes there
>> which broke the backward-compatibility. I want to keep the changes,
>> so going back to the old code is not an option.
>>
>> I have setup the availability macros described in Apple's doc to
>> compile for 10.1, and determined that there are no methods  being
>> called that were not supported in 10.1.
>>
>> I have checked the code to see if there are any "extern" variables
>> from the frameworks, but cannot see any.
>>
>> Someone mentioned in the archives that "Class" objects could cause
>> problems, but I don't really understand this. Is this true, and if
>> so, in what circumstances? My code makes use of NSStringFromClass,
>> NSClassFromString, and also "Class" objects. Could this be the
>> problem, and if so, why?
>>
>> Drew McCormack
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>
>

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Dr. Drew McCormack
Trade Strategist (www.trade-strategist.com)
Trading simulation software for Mac OS X
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